Correct grammar (w3c#966)

Merge pull request w3c#969 from w3c/shawna-slh-patch-1

Update index.md

Merge pull request w3c#965 from w3c/shawna-slh-patch-1

typo fix in transcripts.md

Update contacting.md link fix

Merge pull request w3c#955 from w3c/contacting-Nov-2024

clearer WAI IG list info in contacting.md

Update contacting.md link fix

Update "Translating" page (w3c#874)

* Update Translating page

* Update translating.md after Shawn's review

Merge pull request w3c#947 from w3c/update-date

What We're Working On: Use `last_updated` and  `first_published` variables

Merge pull request w3c#943 from w3c/Oct2024-Nov2024

Update update.md

Manage Update Dates differently (w3c#889)

* Manage Update Dates differently

* Remove changelog line in frontmatter of  French translation

* Update dates in new sections

* Use linked translations.yml file

* Fix wrong use of tabs in "Mobile accessibility" arabic translation

* Update footer/last updated dates in Perspective Videos

* Clean frontmatter

* Accessibility Intro: Do not outdate Deutch/Korean translations

* Accessibility Intro: Fix image in French translation

* Interim repairs: Restore 2019 date

* Involving Users: Set 2020-05-05 as last updated date

* W3C Process: Set 2024-01-15 as last updated date

* ATAG at a Glance: delete manually added date in footer, to display 2024-03-05 as last updated date

* Update "Curricula" pages

* Add first_published dates

* Add first published dates in collections